Feat: Add GitHub Actions workflow for deploying Storybook to GitHub Pages

.github/workflows/deploy-storybook.yml

@@ -0,0 +1,56 @@
+name: Deploy Storybook to GitHub Pages
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [ main ]
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Use Node.js 20
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+
+      - name: Install dependencies (rush)
+        run: |
+          set -e
+          node common/scripts/install-run-rush.js install
+
+      - name: Build repo (rush build)
+        run: |
+          set -e
+          node common/scripts/install-run-rush.js build
+
+      - name: Build Storybook static
+        working-directory: packages/apps/storybook
+        run: |
+          set -e
+          # Try workspace-aware pnpm build first, fall back to running the package script directly
+          pnpm -w run -r --filter @itwin/platform-storybook build || (cd packages/apps/storybook && npm run build)
+
+      - name: Upload Storybook artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: packages/apps/storybook/storybook-static
+
+  deploy:
+    needs: build-and-deploy
+    runs-on: ubuntu-latest
+    permissions:
+      pages: write
+      id-token: write
+
+    steps:
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v1

packages/apps/storybook/package.json

@@ -49,9 +49,9 @@
     "webpack": "^5.28.0"
   },
   "scripts": {
-    "start": "start-storybook -p 6006",
-    "build": "",
-    "test": "build-storybook --loglevel error --quiet",
-    "clean": "rimraf storybook-static"
+  "start": "start-storybook -p 6006",
+  "build": "build-storybook -o storybook-static",
+  "test": "build-storybook --loglevel error --quiet",
+  "clean": "rimraf storybook-static"
   }
 }